Discussion
What are the evidences given by Alfred Wegener in favour of Continental Drift theory ?
(1) Zig-Saw fit of continents
(2) Trans-current faults
(3) Fossils in different areas
(4) Convection in mantle
Answer: A
The answer is (1) and (3): the jigsaw fit of the continents and the fossils found in different areas.
In The Origin of Continents and Oceans (1915) Alfred Wegener argued that the coasts of South America and Africa fit together like pieces of a puzzle, and that identical fossils, such as the reptile Mesosaurus and the plant Glossopteris, occur on continents now separated by oceans. He also used matching rock formations and evidence of past glaciation.
Convection in the mantle was proposed as the driving force by Arthur Holmes in 1928-29; Wegener himself relied on a pole-fleeing force and tidal forces, which was the theory's weak point. Transcurrent (transform) faults belong to plate tectonics in the 1960s, through J. Tuzo Wilson. So every option adding (2) or (4) is wrong.
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